In 2013, research firm Gartner believes that 1.2 billion smartphones and tablets combine will be purchased around the world. The research firm predicts 821 million smart devices will be sold this year.

Gartner is also predicting that tablet sales to businesses will grow substantially in the coming years as businesses start to adopt the form-factor, albeit at a slower rate than consumers. Gartner predicts that Windows 8 will be the third most popular operating system for tablets by 2016 behind iOS and Android OS.

Analysts at Gartner are also predicting two-thirds of the mobile workforce will have smartphones by 2016 and that Android OS will be the leader in the enterprise environment accounting for 56% of smartphones purchased by businesses in North America and Europe by 2016. Apple devices will continue to grow in the enterprise segments.

“Today the wide range of brands and price points that the Android ecosystem offers is winning over users. While Apple remains the heartbeat by which the market moves, Google has rapidly become its archrival,” said Carolina Milanesi, research vice president at Gartner, in a statement.

No, just understand that email isn't secure, so you don't want to be putting highly sensitive info on any mobile phone.. If you think WP8's mail client's EAS is any different than the iPhone mail client's EAS or Android's EAS you are mistaken. If its "top secret" keep it off your phone.